A lamp is on sale for 10% off the regular price of $159. What is the sale price of the lamp?
2 answers:
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Answer:
Step-by-step explanation:
Given
Required
Simplify
Expand brackets
Open all brackets
Collect Like Terms
<em>Hence, the polynomial simplifies to </em><em> and it has a degree of 2</em>
The mean calculated shows that the Chemistry score will be 87.
<h3>How to calculate the score?</h3>From the information given, the total scores will be:
= 84 × 4
= 336
The addition of the scores given will be:
= 72 + 85 + 92
= 249
The Chemistry score will be:
= 336 - 249
= 87
<u>Complete question:</u>
If the mean of the data set is 84 points, find Harukas final exam score in Chemistry.
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